Retina

例句：

1. 1.The doctor examined her eyes and found a small tear on the retina.
   医生检查了她的眼睛，发现视网膜上有一个微小的裂口。
2. 2. She was diagnosed with a rare eye disease that affects the retina.
   她被诊断出患有一种罕见的眼部疾病，影响视网膜。
3. 3. The scientist used a microscope to study the structure of the human retina.
   科学家使用显微镜研究人类视网膜的结构。